Østensjøvannets Venner - ARTSMANGFOLDET VED ØSTENSJØVANNET – FUGLER TÅRNSEILER (Apus apus) Common Swift Foto: Per Morten Berthelsen Tårnseileren er 17-19 cm. Den er litt større enn en vanlig svale og har langstrakt
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An Experimental Approach to Investigating Effects of Artificial Light at Night on Free-Ranging Animals: Implementation, Results, and Directions for Future Research | Protocol (Translated to Norwegian)
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